Researchers at the U.S. Department of Energy’s Pacific Northwest National Laboratory in Richland, WA, develop a new breed of lightweight, space-saving compressed-natural-gas fuel tanks for vehicles. The team headed by senior research scientist Kevin Simmons uses superplastic forming to create the new tank. Superplastic technology, combined with friction air welding, fuses the metal sheets together at specific points. Air is blown in between the sheets to expand them and form ...

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